current bounds on the number of colors: 0 -- 217 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:22 2012 Optimize a model with 26785 rows, 23682 columns and 103140 nonzeros Presolve removed 24 rows and 2592 columns Presolve time: 0.14s Presolved: 26761 rows, 21090 columns, 100548 nonzeros Variable types: 0 continuous, 21090 integer (21090 binary) Root relaxation: objective 0.000000e+00, 368 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (368 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 108 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:22 2012 Optimize a model with 13501 rows, 11964 columns and 51570 nonzeros Presolve removed 24 rows and 1296 columns Presolve time: 0.13s Presolved: 13477 rows, 10668 columns, 50274 nonzeros Variable types: 0 continuous, 10668 integer (10668 binary) Root relaxation: objective 0.000000e+00, 367 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (367 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:23 2012 Optimize a model with 6859 rows, 6105 columns and 25785 nonzeros Presolve removed 24 rows and 648 columns Presolve time: 0.04s Presolved: 6835 rows, 5457 columns, 25137 nonzeros Variable types: 0 continuous, 5457 integer (5457 binary) Root relaxation: objective 0.000000e+00, 368 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (368 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:23 2012 Optimize a model with 3415 rows, 3067 columns and 12415 nonzeros Presolve removed 24 rows and 312 columns Presolve time: 0.01s Presolved: 3391 rows, 2755 columns, 12103 nonzeros Variable types: 0 continuous, 2755 integer (2755 binary) Root relaxation: objective 0.000000e+00, 381 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (585 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:23 2012 Optimize a model with 1693 rows, 1548 columns and 5730 nonzeros Presolve removed 24 rows and 144 columns Presolve time: 0.01s Presolved: 1669 rows, 1404 columns, 5586 nonzeros Variable types: 0 continuous, 1404 integer (1404 binary) Root relaxation: objective 0.000000e+00, 365 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (365 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:23 2012 Optimize a model with 955 rows, 897 columns and 2865 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.01s Presolved: 931 rows, 825 columns, 2793 nonzeros Variable types: 0 continuous, 825 integer (825 binary) Root relaxation: objective 0.000000e+00, 369 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (522 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:23 2012 Optimize a model with 463 rows, 463 columns and 955 nonzeros Presolve removed 463 rows and 463 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:23 2012 Optimize a model with 709 rows, 680 columns and 1910 nonzeros Presolve removed 225 rows and 253 columns Presolve time: 0.00s Presolved: 484 rows, 427 columns, 1452 nonzeros Variable types: 0 continuous, 427 integer (427 binary) Root relaxation: objective 0.000000e+00, 211 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 181 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (662 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3